JP7191083B2 - Charging device test board, test system and test method - Google Patents

Description

The present application relates to the field of charging technology, in particular to a test board, test system and test method for charging devices.

In the related art, it is common to manually generate an anomaly, artificially determine an anomaly condition, and test a charging device such as an adapter. However, a problem that exists in the related art is that manual testing is cumbersome, labor intensive, and takes a long time to complete all tests.

The present application provides a charging device testing system and method that can realize automatic testing, simplifies operation, and saves time and effort.

In a first aspect, an embodiment of the present application provides a charging device test board, wherein the charging device test board is a connection circuit respectively connected to a charging device and a load module, the charging device comprising: a connection circuit for forming a test circuit with the load module via the connection circuit; a first communication module for communicating with a host computer; a second communication module for communicating with the charging device; and a second communication module, receive command information transmitted by the host computer via the first communication module, and the test board or the charging device executes the test command. and a control module for generating corresponding test instructions based on the instruction information.

According to the test board of the charging device provided by the embodiment of the present application, the charging device forms a test circuit with the load module through the connection circuit, and the control module forms the host module through the first communication module. communicate with the computer and communicate with the charging device through the second communication module; the control module receives command information sent by the host computer through the first communication module; By generating corresponding test instructions based on the instruction information, such as executing instructions, automatic testing can be achieved, which simplifies the operation, saves time and effort, and reduces the time involved in the entire test. can be shortened.

According to an embodiment of the present application, after the test board or the charging device executes the test instruction, the control module obtains the status information of the charging device, and based on the status information of the charging device: It is also used to determine test results of the test instructions and to send the test results to the host computer.

According to an embodiment of the present application, after the test board or the charging device executes the test instructions, the control module obtains the status information of the charging device, and the host computer determines the status of the charging device. It is also used to send the status information of the charging device to the host computer so as to determine the test result of the test instruction based on the information.

According to an embodiment of the present application, when the control module executes the test instruction, it simulates an abnormal condition indicated according to the test instruction, collects operating state information of the charging device, and The state information indicates whether the charging device has entered a protection state.

According to an embodiment of the present application, when the charging device executes the test instruction, the control module transmits the test instruction to the charging device via the second communication module, and output state information is collected, and the output state information is used to indicate the output state when the charging device operates according to the test instructions.

According to an embodiment of the present application, the connection circuit includes a first power line and a second power line, one end of the first power line is connected to the positive terminal of the load module, and the other end is connected to the positive terminal of the load module. One end of the second power line is connected to the positive power line of the charging device, and the second power line has one end connected to the negative pole of the load module and the other end connected to the negative power line of the charging device.

According to one embodiment of the present application, the connection circuit further includes a switching transistor connected in series with the first power line or the second power line, and a control electrode of the switching transistor is connected to the control module and the control module controls on or off of the test circuit from the charging device to the load module by controlling on or off of the switching transistor.

According to one embodiment of the present application, the connection circuit further includes a sampling resistor serially connected to the first power line or the second power line, both ends of the sampling resistor being connected to the control module. further connected.

According to one embodiment of the present application, the load module includes an electronic load and the control module is connected to an external power source such that the external power source powers the control module.

According to one embodiment of the present application, said load module is a programmable power supply, said programmable power supply further powering said control module.

According to one embodiment of the present application, the second communication module communicates with the charging device through a first communication line, the first communication line, the first power line, the The second power line is provided on the same cable.

In a second aspect, embodiments of the present application provide a test system, the test system comprising a load module, a test board as described in the embodiments of the first aspect, and a load module via the test board. and a test circuit, further comprising a charging device communicating with the test board, and a host computer communicating with the test board.

The charging device testing system provided by the embodiments of the present application can realize automatic testing, simplify operation, save time and effort, and shorten the overall testing time. can.

In a third aspect, embodiments of the present application provide a testing method for a charging device, the testing method comprising forming a test circuit between a charging device and a load module via a test board; a test board receiving command information sent by a host computer ; a test board generating a test command based on the command information; and a test board or the charging device executing the test command. include.

According to the charging device testing method provided by the embodiments of the present application, the charging device forms a test circuit with the load module through the connection circuit, the test board communicates with the host computer, and the charging communicating with the device, the test board receiving command information sent by the host computer and generating corresponding test instructions based on the command information, such that the test board or the charging device executes the test instructions; Automatic testing can be realized, operation is simplified, time and labor are saved, and the overall test time can be shortened.

According to an embodiment of the present application, after the test board or the charging device executes the test instruction, obtaining status information of the charging device; and transmitting the test results to the host computer.

According to an embodiment of the present application, after the test board or the charging device executes the test instruction, the step of obtaining status information of the charging device; sending status information of the charging device to the host computer so as to determine a test result of the test instruction.

According to an embodiment of the present application, when the control module executes the test instructions, the method simulates an abnormal condition indicated according to the test instructions, and collects operating status information of the charging device. wherein the operating status information indicates whether the charging device has entered a protection status.

According to an embodiment of the present application, when the charging device executes the test instruction, the method further comprises transmitting the test instruction to the charging device and collecting output status information of the charging device. wherein the output state information is used to indicate an output state when the charging device operates according to the test instructions.

Additional features and advantages of the present application will be set forth in part in the description that follows, and in part will be apparent from the description, or may be learned by practice of the application.

The above and/or additional features and advantages of the present application will become apparent and understood from the following description of embodiments with reference to the drawings.
1 is a block schematic diagram of a test board of a charging device of an embodiment of the present application; FIG. 1 is a block schematic diagram of a test board of a charging device of one embodiment of the present application; FIG. FIG. 4 is a block schematic diagram of a test board of a charging device of another embodiment of the present application; FIG. 4 is a block schematic diagram of a test board of a charging device of another embodiment of the present application; 1 is a block schematic diagram of a test system for a charging device of an embodiment of the present application; FIG. 1 is a schematic flow chart of a testing method for a charging device according to an embodiment of the present application;

Examples of the present application are described in detail below. Examples in said embodiments are shown in the drawings, where the same or similar reference numbers always indicate the same or similar elements or elements with the same or similar function. The embodiments described below with reference to the drawings are illustrative and are used only to interpret the present application and should not be understood as limiting the present application.

Hereinafter, the test board, test system and test method of the charging device of the embodiments of the present application will be described with reference to the drawings. be done.

In the embodiments of the present application, the charging device can be used to charge electronic devices. An electronic device can refer to a terminal, which can include smartphones, computers, personal digital assistants (PDAs), wearable devices, Bluetooth headsets, gaming devices, imaging devices, etc. but not limited to these. The charging device may be a device having a function of charging a terminal, such as an adapter, a mobile power source (mobile battery), or an in-vehicle charger. Taking the adapter as an example, the charging device may be a VOOC adapter, and the charging circuit of the VOOC adapter can be directly connected to the battery of the electronic device through the charging interface.

In order to ensure the safety and reliability of the charging device, the charging device is usually provided with safety protection mechanisms such as overvoltage overcurrent overheat protection, circuit impedance abnormality protection, switching transistor abnormality protection, etc. It should be understood. Thus, if any abnormal condition occurs in the charging device during actual use, the charging device will enter the protection state.

To this end, the charging device test system of the embodiment of the present application simulates the state of the electronic device through the test board, communicates with the charging device in real time, intentionally creates an abnormal state, and controls the charging device. The effectiveness of each protection function is verified by monitoring the status in real time and determining whether the charging device has entered a protection status corresponding to an abnormality.

Hereinafter, the test board of the charging device of the embodiment of the present application will be described in detail with reference to FIGS. 1 to 4. FIG.

As shown in FIG. 1 , the charging device test board 100 of the embodiment of the present application includes a connection circuit 10 , a first communication module 20 , a second communication module 30 and a control module 40 .

The connection circuit 10 is connected to the charging device 200 and the load module 300 respectively, and the charging device 200 forms a test circuit with the load module 300 via the connection circuit 10 . That is, the current output by the charging device 200 flows to the load module 300 through the connection circuit 10 of the test board 20, and the current direction is indicated by the arrow in FIG.

The first communication module 20 communicates with the host computer 400, the second communication module 30 communicates with the charging device 200, and the control module 40 is connected to the first communication module 20 and the second communication module 30. be. That is, the control module 40 can receive information transmitted by the host computer 400 via the first communication module 20, and can also transmit information to the host computer 400. Similarly, the control module 40 can can receive information transmitted by the charging device 200 via the second communication module 30 and can also transmit information to the charging device 200 .

It should be noted that the load module 10 can be a load without a battery, and the test board 20 can be combined with the load module 10 to simulate the state of the electronic device, for example, , the battery status includes battery current, battery voltage, etc., and then the test board 20 reports the simulated battery status to the charging device 30 again, and the charging device 30 can simulate the charging process based on the battery status reported by test board 20 .

During testing, the control module 40 receives command information transmitted by the host computer 400 via the first communication module 20, generates corresponding test commands based on the command information, and tests the test board 100 or the charging Device 200 can be made to test instructions.

As an example, the host computer 400 can send command information to the test board 100, and the command information is used to indicate the current test type. It can include testing, circuit impedance testing, and the like. The control module 40 receives command information transmitted by the host computer 400 via the first communication module 20, determines a current test type based on the command information, and executes a corresponding test based on the current test type. Generate instructions. After that, the execution subject of the generated test command is determined. , and the charging device 200 executes the relevant test instruction so that the charging device implements the test corresponding to the test type, and the execution subject of the relevant test instruction is the test board 100, the control module 40 can directly execute the test instruction so that the charging device implements the test corresponding to the test type.

This makes it possible to realize automatic testing, simplify operation, save time and effort, and shorten the time required for the entire test.

When multiple tests are required for the charging device 200, the host computer 400 can sequentially transmit multiple command information according to the set test timing sequence, and the test board 100 receives the command information. It should be understood that for each, a corresponding test instruction can be generated based on the received instruction information and tested based on the corresponding test. Also, after the current test is completed, the host computer 400 can send the next instruction information automatically or based on the instruction input by the user. This allows the entire test to be automatically implemented, saving time and effort, and shortening the time required for the entire test.

In some embodiments of the present application, after the test board 100 or the charging device 100 executes the test instruction, the control module 40 further obtains the status information of the charging device 200 and based on the status information of the charging device 200 is used to determine the test result of the test result and to transmit the test result to the host computer 400 .

In some embodiments of the present application, after the test board 100 or the charging device 200 executes the test instruction, the control module 40 further acquires the status information of the charging device 200 and sends the host computer 400 the status information of the charging device 200 . It is used to transmit status information so that host computer 400 determines test results based on the status information of charging device 200 .

As an example, the status information of the charging device 200 may include operating status signals such as protection status and output status information such as output voltage and output current.

Specifically, when the test board 100 executes a test command, it simulates an abnormal state indicated based on the test command, collects operating state information of the charging device 200 , and collects operating state information from the charging device 40 . It indicates whether or not the protection state has been entered.

The host computer 400 can transmit command information to the test board 100, the command information can indicate the test type, and the control module 40 of the test board 100 can transmit the command information via the second communication module 30. can generate a corresponding test instruction based on the received instruction information, and then the control module 40 executes the test instruction to detect the abnormal condition indicated based on the test instruction. can be simulated, and the charging device 200 forms a test circuit with the load module 300 via the connection circuit 10, so that the charging device 200 detects the abnormal state and the protection function of the abnormal state is It should be appreciated that the protection state can be entered in normal cases.

Next, the test board 100 receives the operating status information of the charging device 200 through the second communication module 30, that is, the information whether the charging device 200 has entered the protection state. The test board 100 determines whether or not the charging device 200 enters the protection state based on the operating state information by itself, or transmits the operating state information to the host computer 400 so that the host computer 400 can detect the charging device 200. It can be determined whether or not the protection state has been entered. When the charging device enters the protection state, the charging device checks whether it has the protection function or the protection function is effective, and if the charging device does not enter the protection state, the charging device confirms whether the abnormality protection function does not exist or whether the abnormality protection function has expired.

Taking the circuit impedance protection function test from the charging device 200 to the load module 300 as an example, when performing the circuit impedance protection function test, the control module 40 can simulate the circuit impedance abnormal state according to the test command. That is, the control module 40 can transmit the test battery voltage VBAT to the charging device 200, the charging device 200 can receive the test battery voltage VBAT reported by the test board 100, and the test battery voltage VBAT The circuit impedance from the charging device 200 to the load module 300 is calculated based on, and the operating state of the charging device 200 (including normal operating state, protected state, etc.) is calculated based on the circuit impedance from the charging device 200 to the load module 300. without limitation). That is, when the circuit impedance is greater than the preset impedance, the charging device 200 enters the protection state, and when the circuit impedance is greater than or equal to the preset impedance, the charging device 200 is in the normal operation state.

At this time, the test board 100 acquires the operating state of the charging device 200 through the second communication module 30, and determines by itself whether the charging device 200 has entered the protection state based on the operating state information. Alternatively, the operating state information is sent to the host computer 400, and the host computer 400 determines whether the charging device 200 enters the protection state. When the charging device enters the protection state, the test board 100 or the host computer 400 checks whether the charging device has a circuit impedance protection function or whether the circuit impedance protection function is effective, and the charging device enters the protection state. If not, the test board 100 or the host computer 400 checks whether the charging device has the circuit impedance protection function or whether the circuit impedance protection function is invalid.

Note that the charging device 200 calculates the circuit impedance from the charging device 200 to the load module 300 based on the charging voltage of the charging device 200, the test battery voltage VBAT reported by the test board 100, and the charging current of the charging device 200. can be done. That is, the charging device 30 can calculate the circuit impedance from the charging device 30 to the load module 10 based on the following formula.
R=(VBUS−VBAT)/I
R is the circuit impedance from the charger 30 to the load module 10, VBUS is the charging voltage of the charger 30, VBAT is the test battery voltage reported by the test board 20, and I is the charging current of the charger 30. is.

In addition, the control module 40 can sample the voltage on the test board and calculate the test battery voltage VBAT based on the voltage V-ADC on the test board, the analog impedance increase value ΔR, and the charging current I of the charging device 30. can. The analog impedance increase value ΔR is greater than or equal to a preset impedance. That is, the control module 40 can calculate the test battery voltage based on the following equation.
VBAT=V-ADC-ΔR*I
VBAT is the test battery voltage, V-ADC is the voltage at the test board 20, ΔR is the analog impedance increase value, and I is the charging current of the charger 30. FIG.

Specifically, when the charging device 200 executes a test command, the control module 40 transmits the test command to the charging device 200 via the second communication module 30 and collects the output state information of the charging device 200. , the output state information is used to indicate the output state when operating according to the charging device 200 test command.

The host computer 400 can transmit command information to the test board 100, the command information can indicate the test type, and the control module 40 of the test board 100 can transmit the command information via the second communication module 30. can generate a corresponding test command according to the received command information, and then the control module 40 transmits the test command to the charging device 200 via the second communication module 30 and the charging device 200 can execute the test instructions and enter a certain test state.

Next, the test board 100 can receive the output status information of the charging device 200 such as the output voltage and output current of the charging device 200 via the second communication module 30 . The test board 100 determines by itself whether the output state information of the charging device 200 satisfies the test requirements based on the output state information, or transmits the output state information to the host computer 400 so that the host computer 400 can It can be determined whether or not the output state information of the charging device 200 satisfies the test requirements.

Taking power consumption testing as an example, when testing power consumption, the control module 40 can send a test command to the charging device 200, and the charging device 200 enters a test scene according to the test command. and the test board 100 can acquire the output state of the charging device 200 such as voltage and current through the second communication module 30 . Based on the output state information, the test board 100 itself determines whether the charging device 200 satisfies the power consumption test requirement, or transmits the output state information to the host computer 400 so that the test board 100 can consume power. It can be determined whether or not the power test requirements are met.

A specific structure of the test board 200 will be described below.

As shown in FIGS. 2-4, the connection circuit 10 can include a first power line 101 and a second power line 102 .

In addition, the charging device 200 may have a power line, and the charging device 200 may output electric energy to the outside through the power line, for example, charging a battery of an electronic device, or charging the load module 300 . to transmit electrical energy to Specifically, the power lines of the charging device 200 can include a positive power line 301a and a negative power line 301b. Among them, the first power line 101 has one end connected to the positive pole of the load module 300, the other end connected to the positive power line 301a of the charging device 200, and the second power line 102 has one end connected to the load module. 300 , and the other end is connected to the negative power line 301 b of the charging device 200 .

The positive power line 301a can also be connected to the positive output end + of the charging circuit 303 of the charging device 200, and the negative power line 301b is connected to the negative output end of the charging circuit 303 of the charging device 200. can also

The current flows out from the positive output terminal + of the charging circuit 303 of the charging device 200, passes through the positive power line 301a and the first power line 101 in sequence, flows into the positive terminal of the load module 300, and then flows into the load module. It should be understood that the current flows out from the positive terminal of 300, sequentially through the second power supply line 102 and the negative power supply line 301b to the negative output terminal of the charging circuit 303 of the charging device 200. FIG.

As an example, when the charging device 200 is connected to an electronic device, the positive power line 301a and the negative power line 301b can be connected to the positive and negative terminals of the battery, respectively, to charge the battery of the electronic device.

According to FIG. 4, the connection circuit 10 further includes a switching transistor 103, the switching transistor 103 is connected to the first power line 101 or the second power line 102, and the control module 40 controls the switching transistor 103. Connected to the electrodes, the control module 40 controls the turning on or off of the test circuit from the charging device 200 to the load module 300 by controlling the turning on or off of the switching transistor 103 .

When the switching transistor 103 is turned on, the test circuit from the charging device 200 to the load module 100 is turned on, the charging device 200 outputs electrical energy to the load module 300, and when the switching transistor 103 is turned off, charging It should be understood that the test circuit from device 200 to load module 300 is interrupted and charging device 200 stops outputting electrical energy to load module 300 .

The control module 40 is connected to the control electrode of the switching transistor 103 , and the switching transistor 103 can be turned on under the control of the control module 40 when the charging device 200 tests. Switching transistor 40 may be a MOS transistor or a triode. The control module 40 may be an MCU (Micro-controller Unit).

Specifically, taking a MOS transistor as an example, the MOS transistor is arranged in the first power supply line 101, the drain of the MOS transistor can be placed near the charging device 200, and the source of the MOS transistor is the charging It can be installed remotely from the device 200 .

According to FIG. 4, the connection circuit 40 can further include a sampling resistor R1 connected in series with the first power line 101 or the second power line 102, both ends of the sampling resistor R1 are connected to the control module 40 is also connected to That is, the control module 40 can sample the current on the first power line 101 or the second power line 102 via the sampling resistor R1, and the control module 40 uses the current as the current of the test circuit. Thus, the charging device 200 may be controlled based on the current, and overcurrent protection may be achieved by controlling the switching transistor 103 when the current is greater than a preset current.

In some embodiments of the present application, load module 300 may be an electronic load or programmed power supply. Therein, the electronic load can be in constant current mode or constant voltage mode. The programmable power supply can be used as a load and can supply power to the outside.

Specifically, if the load module 300 is an electronic load, the control module 40 may be connected to an external power source 50 such that the external power source 50 powers the control module 40 . The programmable power supply also powers the control module 40 when the load module 300 is the programmed power supply.

That is, the power supply of the test board 100 is to supply power to the outside or use it as a programmable power supply of the load module 300 to supply power, so that the charging device 200 enters the protection state and then closes the output of the power supply. After that, the control module 40 is prevented from powering down.

In one embodiment of the present application, as shown in FIG. 4, the second communication module 30 can communicate with the charging device 200 via the first communication line 105, the first communication line 105, the second The first power line 101 and the second power line 102 can be provided on the same cable. The cable may be a USB cable or a Type-c cable, which facilitates the connection between the charging device and the test board.

In one embodiment of the present application, as shown in FIG. 4, the first communication module 20 can communicate with the host computer 400 via a communication cable, which may be a serial communication cable. That is, serial communication can be performed between host computer 400 and test board 100 .

In summary, according to the charging device test board provided by the embodiments of the present application, the charging device forms a test circuit with the load module through the connection circuit, and the control module connects the first communication module to The control module communicates with the host computer via the second communication module and communicates with the charging device through the second communication module, the control module receives command information transmitted by the host computer through the first communication module, and the test board or the charging device By generating the corresponding test instructions based on the instruction information, so that the equipment executes the test instructions, automatic testing can be achieved, which simplifies the operation, saves time and effort, and improves the overall test The time required can be shortened.

Based on the above examples, the present application further provides a test system.

FIG. 5 is a block schematic diagram of a test system according to an embodiment of the present application; As shown in FIG. 5, the test system includes a load module 300, the test board 100 of the previous embodiment, a charging device 200, and a host computer 400.

Charging device 200 forms a test circuit with load module 300 via test board 100 , charging device 200 further communicates with test board 100 , and host computer 400 communicates with test board 100 .

The charging device testing system provided by the embodiments of the present application can realize automatic testing, simplify operation, save time and effort, and shorten the overall testing time. can.

Corresponding to the charging device test board of the previous embodiment, the present application further provides a charging device testing method.

FIG. 6 is a schematic flow chart of a charging device testing method provided by an embodiment of the present application. The test method is applied to a test board, the charging device forms a load module and a test circuit through the test board, the test board communicates with the host computer through the first communication module, and Communicate with the charging device via the second communication module. As shown in FIG. 6, the charging device testing method of the embodiment of the present application includes the following steps.
Step S1: Receive command information sent by the host computer.
Step S2: Generate corresponding test instructions according to the instruction information so that the test board or charging device executes the test instructions.

According to an embodiment of the present application, after the test board or the charging device executes the test command, obtaining the status information of the charging device; and determining the test result based on the charging device status information test command. and sending the test results to the host computer.

According to an embodiment of the present application, after the test board or the charging device executes the test command, the step of obtaining the status information of the charging device; and transmitting the status information of the charging device to the host computer so as to determine .

According to one embodiment of the present application, when the test board executes the test instructions, the method further includes simulating the indicated abnormal condition based on the test instructions and collecting working status information of the charging device. , the operating state information is used to indicate whether the charging device has entered the protection state.

According to an embodiment of the present application, when executing a charging device test command, the method further includes sending a test command to the charging device and collecting output status information of the charging device, the output status information comprising: It is used to indicate the output state when the charging device operates according to the test command.

In addition, the above description of the charging device test board embodiment can also be applied to the charging device testing method of this embodiment, and will not be described again here.

In summary, according to the charging device testing method provided by the embodiments of the present application, the charging device forms a load module and a test circuit through a connection circuit, the test board communicates with a host computer, Further, in communication with the charging device, the test board receives command information sent by the host computer and generates corresponding test instructions based on the command information, such that the test board or the charging device executes the test instructions. Therefore, automatic testing can be realized, operation is simplified, time and labor are saved, and the time required for the entire test can be shortened.

A person skilled in the art can be aware of the following. The units and algorithmic steps of each example described in combination with the embodiments disclosed in this application can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are implemented by integrated hardware or by software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality in different ways for each particular application, and such implementations should not be considered beyond the scope of the present application.

For the convenience and conciseness of the description, the specific working processes of the systems, devices and units described above can be referred to the corresponding steps in the foregoing method embodiments, so the description is omitted here. This should be clearly understood by those skilled in the art.

In some embodiments provided by this application, the disclosed systems, devices and methods can be implemented in other manners. For example, the above apparatus embodiments are only schematic. For example, the division of the units is only the division of logic functions. It is possible to have other partitioning schemes in the actual implementation. For example, multiple units or components may be combined or integrated into other systems, or some features may be ignored or not performed. On the other hand, the couplings or direct couplings or communicative connections between each other shown or discussed may be indirect couplings or communicative connections of devices or units through some interfaces, electrical, mechanical or Other formats are also possible.

The units described as separate parts may or may not be physically separate. Parts shown as units may or may not be physical units. That is, it may be at one location or distributed over multiple network units. According to need, some or all of the units can be selected to achieve the purpose of the technical solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be assembled into one processing unit, but each unit may be an independent physical entity, and two or more units may be combined into one unit. You may collect.

The functions described above may be implemented in the form of software functional units and stored in a single computer readable medium when sold or used as an independent commodity. Based on this understanding, the technical solution of the present application can essentially appear in the form of a software product, or the part contributing to the prior art or the part of the technical solution can appear in the form of a software product, and the computer software product can be a memory. A computer device (personal computer, server, network device, etc.) stored in a medium and containing some instructions to execute all or part of the steps of the method of each embodiment of the present application. . The storage medium includes U disk, removable hard disk, read-only memory (ROM), random access memory (RAM), and media capable of storing various program codes such as disk or CD. .

The above descriptions are only embodiments of the present application, and the protection scope of the present application is not limited thereto. Any variation or replacement readily figured out by any person skilled in the art within the technical scope disclosed in the present application shall fall within the protection scope of the present application. Therefore, the protection scope of this application shall be subject to the claims.

Claims (14)

A charging device test board,
a connection circuit respectively connected to a charging device and a load module, wherein the charging device forms a test circuit with the load module through the connection circuit;
a first communication module that communicates with a host computer;
a second communication module communicating with the charging device;
connected to the first communication module and the second communication module, receives command information transmitted by the host computer via the first communication module, and causes the test board or the charging device to issue a test command; a control module for generating the corresponding test instructions based on the instruction information to execute ;
When the test board executes the test instructions, it performs the abnormal conditions indicated according to the test instructions, collects working status information of the charging device, and the working status information indicates that the charging device is in a protection state. It indicates whether or not it has entered the
A charging device test board characterized by: after the test board or the charging device executes the test instruction, the control module obtains status information of the charging device and determines a test result of the test instruction based on the charging device status information; transmitting the test results to the host computer;
The charging device test board according to claim 1, characterized in that: After the test board or the charging device executes the test instruction, the control module obtains the status information of the charging device, and the host computer outputs the test result of the test instruction according to the charging device status information. transmitting the state information of the charging device to the host computer so as to determine
The charging device test board according to claim 1, characterized in that: When the charging device executes the test instruction, the control module transmits the test instruction to the charging device through the second communication module, collects output status information of the charging device, and The state information indicates an output state when the charging device operates based on the test instruction.
The charging device test board according to claim 1, characterized in that: The connection circuit includes a first power line and a second power line,
the first power line has one end connected to the positive electrode of the load module and the other end connected to the positive power line of the charging device;
The second power line has one end connected to the negative electrode of the load module and the other end connected to the negative power line of the charging device.
The charging device test board according to claim 1, characterized in that: The connection circuit further includes a switching transistor connected to the first power line or the second power line, a control electrode of the switching transistor is connected to the control module, and the control module is connected to the switching transistor. controlling the on or off of the test circuit from the charging device to the load module by controlling the on or off of
The charging device test board according to claim 5 , characterized in that: The connection circuit further includes a sampling resistor serially connected to the first power line or the second power line, and both ends of the sampling resistor are further connected to the control module.
The charging device test board according to claim 5 , characterized in that: the load module includes an electronic load;
the control module is configured to be connected to an external power source, the external power source powering the control module;
The charging device test board according to claim 1, characterized in that: said load module is a programmable power supply, said programmable power supply further powering said control module;
The charging device test board according to claim 1, characterized in that: The second communication module communicates with the charging device through a first communication line, and the first communication line, the first power line, and the second power line are the same. provided on the cable,
The charging device test board according to claim 5 , characterized in that: a test system,
a load module;
a test board;
a charging device forming a test circuit with the load module through the test board and in communication with the test board;
a host computer that communicates with the test board;
the test board receives command information transmitted by the host computer and generates a test command based on the command information, so that the test board or the charging device executes the test command;
When the test board executes the test instructions, it performs the abnormal conditions indicated according to the test instructions, collects working status information of the charging device, and the working status information indicates that the charging device is in a protection state. It indicates whether or not it has entered the
A test system characterized by: A test method for a charging device applied to a test board, comprising:
forming a test circuit between a charging device and a load module through the test board;
receiving instruction information sent by a host computer by the test board;
the test board generating test instructions based on the instruction information;
the test board or the charging device executing a test instruction;
when the test board executes the test instruction, executing an indicated abnormal condition according to the test instruction and collecting operating status information of the charging device;
including
the operating state information indicates whether the charging device has entered a protection state;
A test method for a charging device, characterized by: after the test board or the charging device executes the test instructions,
obtaining status information of the charging device by the test board;
determining a test result of the test instruction by the test board based on the status information of the charging device;
sending the test results to the host computer by the test board;
13. The method of testing a charging device according to claim 12 , wherein: after the test board or the charging device executes the test instructions,
obtaining status information of the charging device by the test board;
a step of sending status information of the charging device from the test board to the host computer;
determining a test result of the test instruction by the host computer based on the state information of the charging device;
further comprising
13. The method of testing a charging device according to claim 12 , wherein:

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